Midea MSH-21HRN1-QB8 Service Manual page 32

10.6 Temperature sensor error.
Including the indoor room, indoor evaporator and outdoor condenser temperature sensor.
Is connector connection good ?
10.7 Outdoor unit protects
Check if the power supply is good
Change outdoor PCB and check if the error is still exit
10.8 EEROM error
EEROM error, indoor PCB is defective, change indoor PCB or change EEPROM if it's changeable.
10.9 Indoor unit communication error.
Check the if the signal wire is well connection
Change indoor PCB and check if the error is still exit
Outdoor PCB failure, change outdoor PCB
29
Replace the sencor ,
Yes
Yes
Yes
Service manual
No
Repair the connector .
Connect the signal wire well or change the
signal wire if it's the problem of the wires.
No
Power supply failure
No
Outdoor PCB failure
No
No
Indoor PCB failure